Radiator-filler cap.



H. A. HOOD.

RADIATOR FILLER CAP.

APPLICATION FILED JULY 29 I9I5.

Patented Dec. 3, I918.

-zen oi? the United States, and resident of St.

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cams shown in Fig". 4-. "M

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Specification. of Letters Patent.

RAIL'JIATUB-FILLER CAP.

Patented Dec. 3, H1 18.

1 application filed July 29, 1915. Serial No. dZfiGCI.

To (all vii/tom it may concern lie itlrnown that l, HARRY A. Hoop, a citi- Louis, Missouri, have invented certain new and useful Improvements in ltadrator-Ffller Caps, of which the following is a specification containing a full. clear and exact description, reference being had to the accompanying drawings, forming apart hereof My invention relates to improvements in radiator filler caps, wherein l employ 'a ring or adapter bearing on its inner face cam shaped projections and having means such as threads for connection with the tiller spout, and a cap carrying spring pressed pins for cotipcration with said cam faced projections to lock the cap in place.

' The object of my invention is to improve the construction of cap shown and described in my application for Letters Patent of the United States filed Julv 6, 191.5, and

serially numbered 38,285, to the end that the cap ma}; be adapted for use in connection with the ordinary filler spouts.

Withthe above object in View, my invention consists in certain novel details of construction and arrangement oil-parts hereinafter fulh described. pointed out in my claim, and illustrated by the accompanying drawings, in which--- Figure 1 is a trout elevation of a radiator tiller spout havingflau internally threaded llangrc at its top equipped with a cap embodyinginy invention said cap and the up per end of said tiller spout being" shown jn section; h

Fig. 2 is an inverted plan of the ring! or adapter showing the arrangement oi the cam shaped elements;

Fig". 3 is a fraginental vertical sectional elevation of the upper end of the tiller spout shown in Fig. 1.. and the ring bearing the cam faced elements, the View being: taken substantially at right angles to Fig. 1;

Fight is a View similar to Fig. 1; showing the demise as constructed and applied to a filler spout having an outside thread and Fig. 5 is an inverted plan oi the ring and Referring by numerals to the accompany-- tug drawings,

ti designates the radiator and .7 the tiller spout" of the type havinci at its upper end an internally threaded flange 8. i

a The reference nume al 9 designates a ring provided with external threads 10 for con ncction with the internally threaded flange Set the tiller snout, and on its interior projecting laterally from the inner perimeter thereof are the diametrically opposite projections 11 whose lower faces incline from explained later. The numeral 15 designates a crown can hearing on its upper surface the radially disposed wine's 16 which facilitate its manipulation. l orined through the cap is a non-circular opening 17, which is designed to receive the upper end of a noncircular stem 13. which stem carries at its upper end a reduced and threaded extension 19 arranged to receive a retainiiur nut 20, Wherehv the crown can is secured to the noncircular stein id.

The numeral 21 designates a collar having a non-circular oncningr therethrougln and which is arranged tor axial movements upon the stem 18, and which collar carries the radial pins 22, which are designed to co-act with said cain- *l accd elements to lock the crown cap to the tiller spout.

At the lower end of the stem 18 If form a stop "28m the form. of stop shown in the drawings being a split ring inserted through an opening formed throueh thc stem and by preference I connect with the split r ng a short chain whose other end is connected with a stud 24 secured Within the tiller spout,

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pressure upon the stem and an upward presv sure against the pins 22. to the. end that the threaded flange 28 carrying at its top an in.-

turned flange 29, from which depend the cam faced elements 30, which are identically like the cam faced elements of the form of device shown in Figs. 1, 2 and 3.

The reference numeral 31 designates a flat'topped cap having a depending flange 32 which embraces the upper end of the ring or adapter 27 and like the crown cap shown in Fig. 1, the cap 31 is provided with a non- I circular opening to receive the non-circular stem 18, which in all particulars is the same as the stem previously described, and is arranged for connection with the cap 31 by means of a retaining nut 20 as in the other form of device.

Assuming a cap is locked to the filler spout and it be desired to remove the same therefrom, the cap is grasped and rotated, thereby unseating the pins 22 from the seats 12 and when said pins are brought to the ends of the cam faces the cap with the stem and said pins may be lifted from position covering the spout.

It is to be noted here that the operation is identical in each of the forms shown, hence the description of the operation of one will cover the operation of the other.

To replace the cap it is first placed in a position so that the pins 22 will be brought over the gaps between the ends of the cam faced elements, where they will be in a position to be engaged beneath said cam faces at the highest points of said cam faces; the cap is then rotated, thereby causing the pins to ride the cam faces, the spring allowing the pins to yield as they are advanced over the cam faces, untilthe pins find the seats 12 where the spring again acts to not only tend to hold the pins seated, but also to hold the crownto a non-leaking position on the filler spout. The posts 13 perform the function of stops to limit the movement of the pins in their rotary movement beyond the seats in appiying the cap, and iqrernoving the cap said posts limit the movement of the pins in topics at this patent-gritty be obtained for neealsao an opposite direction beyond the ends of the flanges on which theposts are formed.

To facilitate the placement of the ring or adapter the crown is placed in position wherein the pins abutthe shoulders or ends ofthe cam faced elements, so that upon a rotation of the crown with its stem and said pins, the ring m i be rotated so that its threaded connection with the filler spout may.

permit the filler tube end to be seated bctween the flanges, said second mentioned flange being provided with cam faces inclined in opposite directions and spaced apart, there being a curved seat formed in each cam face diametrically disposed to each other, said curved seats terminating in shgulders, a cap mounted on said ring, an angular opening formed in said cap, an angular stem positioned in said opening, a nut carried by said stem and adapted to be seated against the top of the cap for limiting the downward movement of the stem, a collar provided with an angular bore mounted on said stem, oppositely disposed arms curved in cross section carried by said collar, said arms adapted to move over said cam. surfaces and to be seated in the said curved seats and to be easily removed therefrom, a,

pin located in the lower end of said stem and a. coil spring mounted on said stem between the collar and pin, the said ring, cap, stem, collar and spring being rotatable and removable together.

In testimony whereof I have signed my name to this specification in presence of two subscribing witnesses.

HARRY A. HUOD.

Witnesses R. (i. Onwro, E. L. WALLACE.

five cents each, by addressing the Commissioner of Patents, Washington, I). C. I

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